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Product structure：Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays

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TSZ22111・14・001

11.Aug.2015 Rev.001

TSZ02201-0H1H0B101570-1-2

DC Brushless Motor Drivers for Fans

Multifunction Single-phase Full-wave

Fan Motor Driver

BD69740FV

Description

BD69740FV is a pre-driver that controls the motor drive part composed of the power transistors.

It incorporates current limiting circuit, lock protection and automatic restart circuit, PWM soft switching circuit, soft start

circuit, and quick start circuit.

The pin is compatible with BD69730FV (rotation speed pulse signal output).

Features

Pre-driver for external power transistors

Speed controllable by DC / direct PWM input

PWM soft switching

Soft start

Quick start

Current limit

Lock protection and automatic restart

Lock alarm signal (AL) output

Applications

Fan motors for general consumer equipment of

desktop PC, and Server, etc.

Package

W(Typ) x D(Typ) x H(Max)

SSOP-B16

5.00mm x 6.40mm x 1.35mm

Absolute Maximum Ratings

Parameter

Symbol

Rating

Unit

Supply Voltage

20

V

Power Dissipation

Pd

0.87

(Note 1)

W

Operating Temperature

Topr

-40 to +105

°C

Storage Temperature

Tstg

-55 to +150

°C

Junction Temperature

Tjmax

150

°C

High side output voltage

36

V

Low side output voltage

15

V

Low side output current

10

mA

Lock alarm signal (AL) output voltage

20

V

Lock alarm signal (AL) output current

10

mA

Reference voltage (REF) output current

12

mA

Hall bias (HB) output current

12

mA

Input voltage (H+, H-, TH, MIN, CS)

7

V

(Note 1) Reduce by 7.0mW/℃ over 25℃. (On 70.0mm×70.0mm×1.6mm glass epoxy board)

Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit

between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated

over the absolute maximum ratings.

SSOP-B16

Datasheet